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Bitfields for Intel 82434LX/NX DRAM Control

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Bit Description

7 - 6

(NX only) DRAM burst timing
00 = X-4-4-4 read/write (default)
01 = X-4-4-4 read, X-3-3-3 write
10 = reserved
11 = X-3-3-3 read/write

5

parity error mask

4

0-Active RAS# mode

3

SMRAM enable (must be set to enable reg 72h)

2

Burst-of-Four Refresh

1

Refresh Type
0 = RAS#-only
1 = CAS#-before-RAS#

0

DRAM Refresh Enable

See Also:

#01055